'World's greenest buildings' get seal of approval

By Lauren Said-Moorhouse, for CNN

June 28, 2012 -- Updated 1645 GMT (0045 HKT)

Certified: Living -- A state-of-the-art water-reclamation facility and environmental education center in New York, the OCSL is the first green building in the United States to receive both LEED Platinum and Living Building Challenge certification.

One of the criteria for the LBC is that the OCSL operates with net zero energy -- all energy necessary to operate the building must be generated on site. Skip Backus, CEO of the Omega Institute, says: "I think the certifications encourage creative thinking that fuels new technology and perspectives. We are all learning how to build in a way that is truly sustainable."

Certified: Living -- Hawaii Preparatory Academy Energy Lab is a high school science building dedicated to the study of alternative energy. The building is fully certified by the Living Building Challenge and runs as a zero net energy, completely sustainable building.

Some of the green credentials of the Energy Lab include the use of salvaged or recycled materials in its construction, an insulated roof made of soy with solar panels on the outside, steel piping instead of PVC piping, a freshwater catchment system tank and a cooling system tank.

Certified: Living -- Located at Tyson Research Center, an environmental field station for Washington University in St. Louis, the Learning Center fosters indoor/outdoor education with a large multi-use classroom that opens directly out to a white oak deck. All materials used in construction were sourced locally.

Net zero energy is created by photovoltaic panels mounted on the roof and two horizontal trackers in the front of the building. A rainwater harvesting system provides potable water and graywater is treated in an infiltration garden. Within the building, composting toilets eliminate waste.

Partially-certified by the LBC -- This sustainable home in Victoria, Canada, uses earthen architecture made of cob (clay, sand and straw).

LBC founder Jason F. McLennan highlights the VanDusen Botanical Gardens in Vancouver, Canada, as a project currently under certification that illustrates the philiosophy of the challenge. The building is inspired by the shape of an orchid. Water is captured and treated on site and energy needs are looked after by themal and solar power.

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Omega Center for Sustainable Living

Net Zero Energy

Hawaii Preparatory Academy Energy Lab

Inside a sustainable school building

Tyson Living Learning Center, St Louis

Solar panels on-site

Eco-sense, Victoria, Canada

VanDusen Botanical Gardens

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STORY HIGHLIGHTS

The Living Building Challenge is a performance-based green ratings system

The International Living Future Institute also aims to educate people on sustainability

Organizers hope to change people's attitudes to the environment

(CNN) -- A rigorous green certification system is recognizing the next phase of eco design, which its founders describe as "the world's greenest buildings."

To date, it has recognized six buildings for their green credentials. Only three have been successful in meeting all its stringent requirements and consequently fully certified as "living."

These are the world's greenest buildings. It is a huge leap forward from conventional green construction.Jason F. McLennan

"These are the world's greenest buildings," says McLennan. "It is a huge leap forward from conventional green construction. These buildings will never get an energy or water bill again."

Projects must be in operation for a minimum of 12 months before they become eligible to participate in the challenge and they can only achieve "living" status after fulfilling requirements in the categories of site, water, energy, health, materials, equity and beauty.

"It takes about 14-16 months to go through the certification process and we are a rigorous process so there are not that many buildings fully certified," says McLennan.

He adds: "The ones that are (certified) are game changers because they become more than a building. They create a whole community of changed people around them."

The International Living Future Institute, a non-profit that was created to take over running the LBC since its inception, hopes its guidelines will change current green construction philosophy and become as powerful as eco-building ratings system Leadership in Energy and Environmental Design, or LEED as it is better known. But unlike LBC, LEED does not certify new buildings based on measurements of their actual performance.

We knew in reality buildings typically don't perform the way they are intended so we wanted to rectify this and base our challenge on reality.Jason F. McLennan

McLennan says: "You'd be surprised no green standards actually go and check if the project is fulfilling what they had planned to do. We knew in reality buildings typically don't perform the way they are intended so we wanted to rectify this and base our challenge on reality."

The LBC was created to encourage the creation of living buildings, sites and communities globally as well as educate people about the importance of going green. The non-profit has been working closely with projects and regulatory bodies to aid experimental green design construction.

It has already been recognized as a credible contender in green building standards by winning global design competition The Buckminster Fuller Challenge earlier this month.

In the official statement, the jurors said the "Living Building Challenge successfully shows how humans and their built environment can be harmoniously, benignly integrated within ecosystems.

"Above all, its rigorous standards and daringly innovative, revolutionary approach to building are already having a considerable impact on the thinking of designers and architects around the world, influencing all levels of design and technological approaches, radically pushing forward the field."

McLennan seems somewhat surprised by the rapid recognition and success the LBC has had internationally. He says: "Without any international marketing budget, we've launched something bigger than ourselves. We have become a meme in a way -- an idea that develops its own legs and begins to travel."

Initially starting with projects in the United States and Canada, the green performance-based ratings system now has registered projects in Australia, France, Lebanon, Mexico, and New Zealand, amongst others, and interest from like-minded groups in Colombia, Ireland and Romania.

"We hope to be training certifiers in those countries," says McLennan. "In Australia, we have three projects that are underway. We are in discussions with many leading thinkers about ideas working to create the Australian institute.

"They would be the governing body for the Living Building project tied into a global network of ambassadors, collaboratives and institutes around the world for the transformation of society ... It's about changing the world and building a network of people."